After 0.17.0: Remove CUI

[matmair]

This PR removes CUI and adjacent helpers that are no longer required.

Part of the preparation for 1.0 as listed in the blog.

closes #5754

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 84.56%. Comparing base (81e87a6) to head (45d5175).

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #8384      +/-   ##
==========================================
- Coverage   84.59%   84.56%   -0.03%     
==========================================
  Files        1182     1178       -4     
  Lines       53996    53688     -308     
  Branches     2031     2027       -4     
==========================================
- Hits        45677    45403     -274     
+ Misses       7816     7779      -37     
- Partials      503      506       +3     

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[SchrodingersGat]

That's a lot of code removed :)

[matmair]

@SchrodingersGat not even all - just the parts I think that are safe. I will open PRs that port over all the test changes to 0.17.0 already to make the diff of modified files smaller in this changeset. Things like the middleware tests

[matmair]

@SchrodingersGat looking through coverage several questions have popped up:

• do we still need BomUploadTemplate and BomDownload
  https://github.com/matmair/InvenTree/blob/11a5f309b51186f64f808548ecebfbec2da6c09d/src/backend/InvenTree/part/views.py#L12-L25
• we have a lot of model properties that are only used in the HTML templates, not the API - should we keep or remove them?
• there is a bunch of django-import-export stuff still in here - should I remove that too?

[SchrodingersGat]

do we still need BomUploadTemplate and BomDownload

For now - all the features of BomDownload have not been ported across to the new framework yet.

we have a lot of model properties that are only used in the HTML templates, not the API - should we keep or remove them?

Happy to remove if they are only ever called from the HTML templates. I'd like that as a separate PR so we can review each removed function closely

there is a bunch of django-import-export stuff still in here - should I remove that too?

Let's do that as a separate PR - I want to ensure that all the import/export functionality has been replicated in the new system

[matmair]

Happy to remove if they are only ever called from the HTML templates. I'd like that as a separate PR so we can review each removed function closely

Should this be one PR per model or all models in one?

Let's do that as a separate PR - I want to ensure that all the import/export functionality has been replicated in the new system

I have something rough for this in the pipeline, will keep it rough till 0.17.0 is through